If you read bug #501018, which is marked as a duplicate of this one, the author says the bug still exists in Lucid Beta.
-- [Karmic] Laptop only remains DPMS off for 2 seconds https://bugs.launchpad.net/bugs/447728 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
